Communication Systems The disadvantage of FM over AM is that High output power is needed High modulating power is needed Large bandwidth is required Noise is very high for high frequency High output power is needed High modulating power is needed Large bandwidth is required Noise is very high for high frequency ANSWER DOWNLOAD EXAMIANS APP
Communication Systems In case of low level amplitude modulation system, the amplifiers following the modulated stage must be Class C amplifiers Non-linear devices Linear devices Harmonic devices Class C amplifiers Non-linear devices Linear devices Harmonic devices ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For AM receivers the standard IF frequency is 455 kHz 106 kHz 1.07 MHz 10.7 MHz 455 kHz 106 kHz 1.07 MHz 10.7 MHz ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Circular polarization Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams None of these Involves critical alignment of transmitting and receiving antenna Is useful in reducing depolarization effect on received wave Is useful in discrimination between reception of adjacent beams None of these ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation. A is wrong but R is correct Both A and R are correct but R is not correct explanation of A Both A and R are correct and R is correct explanation of A A is correct but R is wrong A is wrong but R is correct Both A and R are correct but R is not correct explanation of A Both A and R are correct and R is correct explanation of A A is correct but R is wrong ANSWER DOWNLOAD EXAMIANS APP
Communication Systems To eliminate ghosts in the picture Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line Twist the transmission line Change the antenna orientation of location Connect a booster Use a longer transmission line ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS